You’ve seen us in Tip #1415 doing some Microsoft Graph abracadabra to call Excel functions directly from Power Automate. To do that we use Excel spreadsheet located on OneDrive for Business. Documentation mentions in passing that “You can use Microsoft Graph to allow web and mobile applications to read and modify Excel workbooks stored in OneDrive for Business, SharePoint site or Group drive” but none of the examples uses SharePoint, everyone is obsessed with /me/drive/. Brian asks a fair question:

Is it possible to do with an excel document stored in a SharePoint document library?

Brian

Lo and behold. The syntax is similar except instead of /me/ you have to point to the site, i.e. /sites/root/lists/{list-id}/ (if your list is on the root site). For example this will calculate the average:

POST https://graph.microsoft.com/v1.0/sites/root/lists/33246232-feed-dead-beef-decaf5388770/drive/root:/your-workbook.xlsx:/workbook/functions/average
content-type: Application/Json 
authorization: Bearer {access-token} 

{
    "values": [1,2,3,4,5]
}

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